Seedlings keep dying !!!! HELP

The seeds pop..........I put them in small rock wool cubes........they are in a humidity dome......they sprout........get about two inches tall.........then they died.......How much water should they require......the humidity dome has a heating pad........When should I put the seedling in the bubbler......

a few things...

-have you pre treated the rockwool?
-what kind of water are you using?
-how much water are you giving it?

Don't have much hands on experience, but from what i've read once seedlings sprout you should take them out of the dome so they dont damp and rot. Im guessing your using hydro so I have no clue from there.

the cubes should always be moist no matter what, if seedlings roots dry out then the plant dies, i pour water on mine and let it get pretty wet and when it starts getting dry but not to dry i add water and soak the cube again also i cut (not deep) a cross in the bottom so it makes it easier for the roots to grow out and i place the seed in the cube from the start and place a small light over it to help keep it warm and for the plant to sprout towards the light.....good luck

once they pop you should place the cube in a bigger pot, and keep it moist NOT wet. rockwool gets soaked easily, and prevents roots from airing properly

Yes I am soaking the rockwool. 5.5 ph water...............the nest question about how much water is my problem. inside the humidity dome a add water that fills the grooves, then turns into humidity. The rockwool cubes are pretty much soaked. And yes I am using hydro. Am I giving to much water ....the heating pad tends to dry out the humidity dome if I dont continue adding water.

are the seedlings just falling over? (due to the light)

they raced up to about 2" tall. Then when I got home the next day one of the seedlings was bent all the way over about half way up the stem......today both are still standing but no leaves...So I put them in the bubbler with light nutes...........I think I drown them, either with the rockwool being tooo soaked with water, then by leaving the dome on for too long.......I put water in the trey and had a heating mat on. I think I should have taken the dome off after they shot up. ?????? any advise

When mine started stretching I used hydroton to keep them upright and supported and put some floros right on top of them(2")

I'm gonna say its a watering issue. RW should be kept moist, not soaking wet. There is a fine line between the two when your still learning. You should also pretreat the rw to ph it, as well as applying a LIGHT nute solution. Here are some links I hope will help you. http://www.jasons-indoor-guide-to-organic-and-hydroponics-gardening.com/seedlings-and-rockwool.html http://grodan101.com/sw62481.php BTW. If I were you, I'd grow a few plants in soil to find a good female. Then you can root cuttings for your hydroponic system of choice. You will have the advantage of knowing all are females and the growth pattern will be even among all plants. Clones are the way to go in hydro. Good luck.

Yes as I said once seedlings sprout you should take them out of the dome so the actual seedling part doesnt damp off and rot. It's in the Bible.

that was overkill, plants grow in nature, just that seedlings die in rough times, they like mild normal conditions but they don't like to be born in a sauna. keep seeds in mild temps 22 c and moist but airy condition. you might want to try some seed starting medium or just not water as much, when they sprout remove the dome, give them light not fry them, allow some leaf growth, feed, add light and they're off.

Thanks guys.....Once these seeds pop I will try all the advice I have read.